When downloading applications in the DMG file format, it will not install and I get a warning box saying that the following disk image could not be opened. Reason: Invalid Argument. Why? This happens again and again.

With the help of El Capitan OS 10.11.5

Try to upload Studio Art 4, trial version.

If installed, disable the anti-virus software, and then try again.

Tags: Mac OS & System Software

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